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Quantum dot film and its production method, quantum dot device

A technology of a quantum dot device and a manufacturing method, which is applied in the field of preparing quantum dot films, can solve the problem of high manufacturing cost of quantum dot films, and achieve the effects of high cost, low equipment requirements and simple operation.

Active Publication Date: 2019-07-16
NANJING TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a quantum dot film and its production method, quantum dot device, to solve the problem of high production cost of quantum dot film in the prior art

Method used

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  • Quantum dot film and its production method, quantum dot device
  • Quantum dot film and its production method, quantum dot device
  • Quantum dot film and its production method, quantum dot device

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0065] In an optional embodiment of preparing the quantum dot light conversion film, before the first quantum dot film is provided, in step S2, the substrate may be a substrate with a flat surface, such as a substrate with a flat surface. The emission color of the quantum dot dispersion in step S1 is selected from one of red, green and blue, that is, the first light is red, green or blue.

[0066] Such as figure 2 As shown, when the first quantum dot film emitting the first light is provided on the first pixel region of the substrate 3, steps S1 to S4 can be performed:

[0067] In step S1, the cover plate 1 and a plurality of microcapsules 2 are first prepared. Each microcapsule 2 adheres to the surface of one side of the cover plate 1 in a single-layer array structure. Each microcapsule 2 includes a capsule wall and a capsule wrapped in the capsule wall. Quantum dot dispersion liquid, the quantum dot dispersion liquid in each microcapsule 2 has a red luminescent color, that...

Embodiment 1

[0096] Adopt the preparation method of following quantum dot film to prepare quantum dot film:

[0097] Step S1, such as figure 2 As shown, the cover plate 1 is prepared, and its material is PMMA, and a plurality of microcapsules 2 are prepared, and each microcapsule 2 is arranged on a plurality of rectangular areas on the surface of the cover plate 1, and each rectangular area is separated from each other, and The arrangement density is 70,000 per square centimeter, and the area of ​​each rectangular area is 40,000 square microns. Each microcapsule 2 includes a capsule wall and a quantum dot dispersion liquid located in the capsule wall. The material of the capsule wall is polyester, a natural polymer material, located in The quantum dot dispersion in the capsule wall includes red light-emitting quantum dots with CdSe / CdS core-shell structure, and the surface of the quantum dots has oleylamine ligands, the diameter of the quantum dots is 10nm, and the quantum dot dispersion ...

Embodiment 2

[0103] The difference from Example 1 is that,

[0104] The substrate 3 also includes a second pixel area, and the second pixel area includes a plurality of second sub-pixel areas. Before the execution of step S5 in embodiment 1, the process of steps S1 to S4 in embodiment 1 is repeated, wherein the microcapsules The quantum dot dispersion liquid in 2 is a quantum dot dispersion liquid capable of emitting green light, so that at least one microcapsule 2 corresponds to a second sub-pixel area to obtain a second quantum dot film arranged in the second pixel area, and each of the above-mentioned second sub-pixels The arrangement structure and arrangement density of the sub-pixel area may be the same as those of the first sub-pixel area.

[0105] The substrate 3 also includes a third pixel area, and the third pixel area includes a plurality of third sub-pixel areas. Before the execution of step S5 in embodiment 1, the process of steps S1 to S4 in embodiment 1 is repeated, wherein t...

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Abstract

The invention provides a quantum dot film and a preparation method thereof and a quantum dot device. The preparation method comprises the steps of (S1) preparing a cover board and a plurality of microcapsules, arranging the microcapsules on one side surface of the cover board, wherein each microcapsule comprises a capsule wall and quantum dot dispersion capable of emitting first light in the capsule wall; (S2) making one side, with the microcapsules, of the cover board toward a substrate, wherein the substrate comprises a first pixel area, and the first pixel area comprises a plurality of first subpixel areas, so that at least one microcapsule corresponds to one first subpixel area and the microcapsule walls are in contact with the surface of the substrate; (S3) applying preset conditionsto one side, far away from the microcapsules, of the cover board, and making the capsule walls break and release the quantum dot dispersion on the surface of the substrate corresponding to the first subpixel areas; and (S4) removing the cover board with broken capsule walls and solidifying the released quantum dot dispersion to obtain a first quantum dot film. The preparation method is simple in operation and relatively low in preparation cost.

Description

technical field [0001] The invention relates to the technical field of preparing quantum dot films, in particular to a quantum dot film, a manufacturing method thereof, and a quantum dot device. Background technique [0002] The current quantum dot light-emitting diode (Quantum Dot Light Emitting Diodes, QLED) devices are mostly photoluminescent QLED devices. This technology belongs to the improvement technology of liquid crystal technology, which is to add a layer of quantum dot film behind the traditional liquid crystal panel. The quantum dots in this quantum dot film can emit RGB three-color pure color light under the excitation of blue LED light source. The real QLED is an electroluminescent device, which is a more advanced application of quantum dots in the field of display technology. It is no longer that blue light excites a layer of quantum dot film to generate white light to illuminate the LCD screen, but through electric drive, the blue light quantum dot itself em...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L21/02H01L33/00H01L33/44H01L33/50H01L33/26
CPCH01L21/02H01L21/02104H01L33/005H01L33/26H01L33/44H01L33/50
Inventor 杜勇
Owner NANJING TECH CORP LTD